Hi,
Please refer attached cross sectional view for this pilot operated valve at Dipper_Valve_China.
These are pilot operated surge relief valve.
Hope now you have required information for brand & type of valve...
Hi,
This is pilot operated axial flow type surge relief valve.
Customer requirement for design & testing as per ISO 4126.
So applicable standard is "ISO 4126-4:2013 - Safety devices for protection against excessive pressure — Part 4: Pilot operated safety valves".
After our discussion, I came...
Hi,
Thanks for your reply, it is very useful information!
I would like to ask one more query regarding form of any valve body; to be tested under hydro-shell.
If any valve body made from bar machining or forging; then also specification ask for hydro shell for it (as it is main valve body OR...
Hello All,
For pilot operated surge relief valve, hydrostatic shell testing;
does any standard specification asks for pilot testing at same pressure as main valve body shell test?
For example, if we have CL.300 pressure class valve; we will do hydro shell at 78 bar (1.5 times of rated...